John j



J J SWEENEY STOVE BOARD 0R PLATFORM.

Patented Mar. 1. 1892.

INVENTORI llNrrE JOHN J. swEENEY, OF NEW YORK, N. Y.

STOVE BOARD OR PLATFORM.

SPECIFICATION forming part of Letters Patent No. 469,875, dated March 1,1892.

Application filed March 14, 1891.

To all whom it may concern.-

Be it known that I, JOHN J. SWEENEY, a citizen of the United States,residing in the city, county, and State of New York, have inventedcertain Improvements in Stove Boards or Platforms, of which thefollowing is a specification.

My invention relates to that class of stoveboards each of which consistsof a sheet of metal, usually embossed tin-plate, mounted on a woodenbacking, the sheet metal extending over the edge of the Wooden backingin the manner of a binding. Broadly speaking, such boards are old andwell known, and they have been made of various formscircular,rectangular, and oblong,with rounded corners.

My present invention consists of a stoveboard of metal plate with awooden backing, having a raised bead around its margin, the crease inthe metal at the inside of the bead extending down into the wood and thewood filling or measurably filling the bead in the metal. Preferably,also, the metal of the board rises slightly above the general level ofthe wooden backing on the surface of the board within the space inclosedby the crease, as will be explained.

In the drawingswhich serve to illustrate my invention, Figure 1 is aplan view of a stoveboard embodying my improvements, andFig. 2 is atransverse section of the same on line 2 2 in Fig. 1. These views show arectangular oblong board with rounded corners. Figs. 3, 3, and 3illustrate the mode I usually follow in making the board. Fig. 3illustrates the first operation, which consists in flanging the sheetmetal. Fig. 3 illustrates the second operation, which consists inapplying the flanged sheet to the board and turning the flange down uponthe back of the same; and

Fig. 3 illustrates the final creasing operation.

Fig. 4 is a similar View to Fig. 3 illustrating a slight modification.

In order to the better understanding of my invention I will explainhowIproceed toconstruct the board, premising that other modes ofmanufacture may, however, be employed.

I take a piece of sheet metal a, usually embossed tin-plate, and cutitto the proper shape. I then, in a suitable die or press, form on itsmargin the primary flange b and a slight head 0 on its face side. Theflange will be turned serial No. 385,057- (No model.)

toward the back. The sheet thus beaded and flanged is seen in Fig. 3,wherein the dotted lines represent the position the wooden backing d isto occupy. This backing is usually made of two layers of thin materialwith the grain crossed. The next step is to place the backing,-and thenturn the surplus portion 1) of the flange I) over and down upon the backor outer face of the wood, as seen in Fig. 3.

The board is now put in a die or press and a deep crease 6 formed bypressing the sheet metal down into the wood of the backing just insideof the head 0. This is represented in Fig. 3 where the dotted linesroughly inclicate the forms of the dies that may be used.

much above the wood over the central por-' tion of the surface of theboard, but to avoid the unsightly concavityv and irregularity of thesurface found in many boards as ordinarily constructed.

Fig. 4 is a sectional view designed to illustrate a slight modificationof the construction, wherein the margin of the flange b is forced intothe relatively softer material of the backing at g by a creasing-die orsimilar mechanical means. This creasing serves to hold the flange firmlyagainst slipping while the crease e is being formed and to permit theupper creasing-die to draw the metal snugly over the edge of thebacking. The backing will usually be of wood; but it might bemade ofother relatively soft material, as straw lumber, for example. I do notlimit myself to wood for a lining or backing.

My construction provides the board with a firm metallic binding, therigidity, compactness, and neatness of which is due to the formation ofthe deep crease c. This creasing being effected while the flange b isheld fast,

the effect is to draw the sheet metal snuglyover the edge of the wood. I

IVhen the board is creased as above de-- scribed and the main uppersurface of the metal made slightly convex or cushion-like, theappearance presented is that of a stitched binding, and to enhance theappearance of the board and increase the resemblance the creas- 1ng-diemay be so constructed as to make markings in the crease which simulatestitches. These, however, are not essential.

I do not herein claim the method of making the board described, as thisforms the subjectmatter of another application filed by me. It may be byany method, either with the aid of machinery or by hand with tools.

Having thus described my invention, I claim- As an improved article ofmanufacture, a

